<template>
  <div>

    <!--导航条-->
    <swiper :options="swiperOption">
      <swiper-slide v-for="v in tags" :key="v.id" >
        <router-link :to="{params:{tid:v.id},name:'Video'}">
          {{v.name}}
        </router-link>
      </swiper-slide>
    </swiper>

    <!--导航条结束-->

    <!--视频列表-->
    <ul id="videolist">
      <li v-for="v in lesson" :key="v.id">
        <router-link :to="{params:{lessonId:v.id},name:'Page'}" class="pic">
          <img :src="v.preview"/>
          <span>08:26</span>
          <i class="iconfont icon-bofang"></i>
        </router-link>
        <router-link :to="{params:{lessonId:v.id},name:'Page'}" class="title">
          {{v.title}}
        </router-link>
      </li>


    </ul>
    <!--视频列表结束-->


    <!--底部固定导航-->
    <ul id="bottom">
      <li>
        <router-link to="/">
          <i class="iconfont icon-shouyeshouye"></i>
          <span>首页</span>
        </router-link>
      </li>
      <li class="cur">
        <router-link to="/video">
          <i class="iconfont icon-icon02"></i>
          <span>视频</span>
        </router-link>
      </li>
    </ul>

  </div>
</template>

<script>
  export default {
    name: 'vide',
    watch:{
      '$route'(to,from){
        this.loadData();
      }
    },
    mounted() {
      this.loadData();
    },
    methods:{
      loadData(){
        let tid=this.$route.params.tid;
        this.axios.get('http://spz.miaosuwulimi.cn/api/tags').then((response) => {
          this.tags = response.data.data;
        });
        this.axios.get('http://spz.miaosuwulimi.cn/api/lesson/'+(tid?tid:0)).then((response) => {
          this.lesson = response.data.data;
        });
      }
    },
    data() {
      return {
        tags: [],
        lesson:[],
        swiperOption: {
          slidesPerView: 3,
          spaceBetween: 30,
          freeMode: true,
          pagination: {
            el: '.swiper-pagination',
            clickable: true
          }
        }
      }
    }
  }
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
  * {
    padding: 0;
    margin: 0;
    color: #31343B;
  }

  a {
    text-decoration: none;
    color: #31343B;
  }

  li {
    list-style: none;
  }

  body {
    font-family: Helvetica Neue, Helvetica, Arial, sans-serif;
    padding-bottom: 15%;
  }

  .swiper-container {
    width: 100%;
    background: #31343B;
    position: fixed;
    left: 0;
    top: 0;
  }

  .swiper-slide {
    float: left;
    width: 30%;
    text-align: center;
    line-height: 3em;
    font-size: 3.5vw;
    color: white;
    position: relative;
    margin: 0 10px;
  }

  .swiper-slide a{
    color: #FFF;
  }

  .swiper-slide:active, .swiper-slide:link, .swiper-slide:hover {
    text-decoration: none;
    color: white;
  }

  .swiper-slide.cur:after {
    display: block;
    content: '';
    width: 60%;
    height: 3px;
    background: white;
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
  }

  /*视频列表*/
  #videolist {
    width: 94%;
    margin: 0 auto;
    margin-top: 15%;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
  }

  #videolist li {
    width: 49%;
    margin-top: 10px;
  }

  #videolist li a.pic {
    display: block;
    width: 100%;
    height: 30vw;
    overflow: hidden;
    position: relative;
  }

  #videolist li a.pic img {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    height: 100%;
    min-width: 100%;
  }

  #videolist li a.pic span {
    line-height: 1.5em;
    font-size: 3vw;
    color: white;
    background: rgba(0, 0, 0, 0.5);
    position: absolute;
    right: 0;
    top: 0;
    padding: 0 2%;
  }

  #videolist li a.pic .iconfont.icon-bofang {
    position: absolute;
    color: rgba(255, 255, 255, 1);
    left: 50%;;
    top: 50%;
    font-size: 8vw;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.4);
    border-radius: 50%;
    line-height: 1em;
  }

  #videolist li a.title {
    display: block;
    text-align: center;
    line-height: 2.5em;
    font-size: 3.2vw;
    color: #31343B;
  }

  /*视频列表结束*/

  /*底部固定导航*/
  #bottom {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    display: flex;
    background: #FFFFFF;
    margin: 0;
  }

  #bottom li {
    width: 50%;
    box-sizing: border-box;
  }

  #bottom li i.iconfont {
    color: #888;
    font-size: 6vw;
    display: block;
    text-align: center;
  }

  #bottom li span {
    font-size: 2.6vw;
    display: block;
    text-align: center;
    color: #888;
  }

  #bottom li.cur {
    /*background: #333;*/
  }

  #bottom li.cur i.iconfont {
    color: #333;
  }

  #bottom li.cur span {
    color: #333;
  }

  /*底部固定导航结束*/

</style>
